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path: root/drivers/usb/host/ehci-hub.c
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Diffstat (limited to 'drivers/usb/host/ehci-hub.c')
-rw-r--r--drivers/usb/host/ehci-hub.c118
1 files changed, 63 insertions, 55 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index bfe5f307cba6..df00fcbadfbc 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -47,7 +47,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
ehci_quiesce (ehci);
hcd->state = HC_STATE_QUIESCING;
}
- ehci->command = readl (&ehci->regs->command);
+ ehci->command = ehci_readl(ehci, &ehci->regs->command);
if (ehci->reclaim)
ehci->reclaim_ready = 1;
ehci_work(ehci);
@@ -60,7 +60,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
ehci->bus_suspended = 0;
while (port--) {
u32 __iomem *reg = &ehci->regs->port_status [port];
- u32 t1 = readl (reg) & ~PORT_RWC_BITS;
+ u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
u32 t2 = t1;
/* keep track of which ports we suspend */
@@ -79,7 +79,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
if (t1 != t2) {
ehci_vdbg (ehci, "port %d, %08x -> %08x\n",
port + 1, t1, t2);
- writel (t2, reg);
+ ehci_writel(ehci, t2, reg);
}
}
@@ -92,8 +92,8 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
mask = INTR_MASK;
if (!device_may_wakeup(&hcd->self.root_hub->dev))
mask &= ~STS_PCD;
- writel(mask, &ehci->regs->intr_enable);
- readl(&ehci->regs->intr_enable);
+ ehci_writel(ehci, mask, &ehci->regs->intr_enable);
+ ehci_readl(ehci, &ehci->regs->intr_enable);
ehci->next_statechange = jiffies + msecs_to_jiffies(10);
spin_unlock_irq (&ehci->lock);
@@ -118,26 +118,26 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
* the last user of the controller, not reset/pm hardware keeping
* state we gave to it.
*/
- temp = readl(&ehci->regs->intr_enable);
+ temp = ehci_readl(ehci, &ehci->regs->intr_enable);
ehci_dbg(ehci, "resume root hub%s\n", temp ? "" : " after power loss");
/* at least some APM implementations will try to deliver
* IRQs right away, so delay them until we're ready.
*/
- writel(0, &ehci->regs->intr_enable);
+ ehci_writel(ehci, 0, &ehci->regs->intr_enable);
/* re-init operational registers */
- writel(0, &ehci->regs->segment);
- writel(ehci->periodic_dma, &ehci->regs->frame_list);
- writel((u32) ehci->async->qh_dma, &ehci->regs->async_next);
+ ehci_writel(ehci, 0, &ehci->regs->segment);
+ ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
+ ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next);
/* restore CMD_RUN, framelist size, and irq threshold */
- writel (ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
/* manually resume the ports we suspended during bus_suspend() */
i = HCS_N_PORTS (ehci->hcs_params);
while (i--) {
- temp = readl (&ehci->regs->port_status [i]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
temp &= ~(PORT_RWC_BITS
| PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E);
if (test_bit(i, &ehci->bus_suspended) &&
@@ -145,20 +145,20 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
ehci->reset_done [i] = jiffies + msecs_to_jiffies (20);
temp |= PORT_RESUME;
}
- writel (temp, &ehci->regs->port_status [i]);
+ ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
}
i = HCS_N_PORTS (ehci->hcs_params);
mdelay (20);
while (i--) {
- temp = readl (&ehci->regs->port_status [i]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
if (test_bit(i, &ehci->bus_suspended) &&
(temp & PORT_SUSPEND)) {
temp &= ~(PORT_RWC_BITS | PORT_RESUME);
- writel (temp, &ehci->regs->port_status [i]);
+ ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
ehci_vdbg (ehci, "resumed port %d\n", i + 1);
}
}
- (void) readl (&ehci->regs->command);
+ (void) ehci_readl(ehci, &ehci->regs->command);
/* maybe re-activate the schedule(s) */
temp = 0;
@@ -168,14 +168,14 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
temp |= CMD_PSE;
if (temp) {
ehci->command |= temp;
- writel (ehci->command, &ehci->regs->command);
+ ehci_writel(ehci, ehci->command, &ehci->regs->command);
}
ehci->next_statechange = jiffies + msecs_to_jiffies(5);
hcd->state = HC_STATE_RUNNING;
/* Now we can safely re-enable irqs */
- writel(INTR_MASK, &ehci->regs->intr_enable);
+ ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
spin_unlock_irq (&ehci->lock);
return 0;
@@ -217,7 +217,8 @@ static int check_reset_complete (
// what happens if HCS_N_CC(params) == 0 ?
port_status |= PORT_OWNER;
port_status &= ~PORT_RWC_BITS;
- writel (port_status, &ehci->regs->port_status [index]);
+ ehci_writel(ehci, port_status,
+ &ehci->regs->port_status [index]);
} else
ehci_dbg (ehci, "port %d high speed\n", index + 1);
@@ -268,13 +269,14 @@ ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
/* port N changes (bit N)? */
spin_lock_irqsave (&ehci->lock, flags);
for (i = 0; i < ports; i++) {
- temp = readl (&ehci->regs->port_status [i]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
if (temp & PORT_OWNER) {
/* don't report this in GetPortStatus */
if (temp & PORT_CSC) {
temp &= ~PORT_RWC_BITS;
temp |= PORT_CSC;
- writel (temp, &ehci->regs->port_status [i]);
+ ehci_writel(ehci, temp,
+ &ehci->regs->port_status [i]);
}
continue;
}
@@ -373,18 +375,18 @@ static int ehci_hub_control (
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
- temp = readl (&ehci->regs->port_status [wIndex]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
- writel (temp & ~PORT_PE,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp & ~PORT_PE,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_ENABLE:
- writel((temp & ~PORT_RWC_BITS) | PORT_PEC,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, (temp & ~PORT_RWC_BITS) | PORT_PEC,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_SUSPEND:
if (temp & PORT_RESET)
@@ -396,8 +398,8 @@ static int ehci_hub_control (
goto error;
/* resume signaling for 20 msec */
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
- writel (temp | PORT_RESUME,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp | PORT_RESUME,
+ &ehci->regs->port_status [wIndex]);
ehci->reset_done [wIndex] = jiffies
+ msecs_to_jiffies (20);
}
@@ -407,16 +409,17 @@ static int ehci_hub_control (
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
- writel (temp & ~(PORT_RWC_BITS | PORT_POWER),
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci,
+ temp & ~(PORT_RWC_BITS | PORT_POWER),
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_CONNECTION:
- writel((temp & ~PORT_RWC_BITS) | PORT_CSC,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, (temp & ~PORT_RWC_BITS) | PORT_CSC,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
- writel((temp & ~PORT_RWC_BITS) | PORT_OCC,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, (temp & ~PORT_RWC_BITS) | PORT_OCC,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_RESET:
/* GetPortStatus clears reset */
@@ -424,7 +427,7 @@ static int ehci_hub_control (
default:
goto error;
}
- readl (&ehci->regs->command); /* unblock posted write */
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted write */
break;
case GetHubDescriptor:
ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
@@ -440,7 +443,7 @@ static int ehci_hub_control (
goto error;
wIndex--;
status = 0;
- temp = readl (&ehci->regs->port_status [wIndex]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [wIndex]);
// wPortChange bits
if (temp & PORT_CSC)
@@ -458,12 +461,14 @@ static int ehci_hub_control (
ehci->reset_done [wIndex] = 0;
/* stop resume signaling */
- temp = readl (&ehci->regs->port_status [wIndex]);
- writel (temp & ~(PORT_RWC_BITS | PORT_RESUME),
- &ehci->regs->port_status [wIndex]);
- retval = handshake (
- &ehci->regs->port_status [wIndex],
- PORT_RESUME, 0, 2000 /* 2msec */);
+ temp = ehci_readl(ehci,
+ &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci,
+ temp & ~(PORT_RWC_BITS | PORT_RESUME),
+ &ehci->regs->port_status [wIndex]);
+ retval = handshake(ehci,
+ &ehci->regs->port_status [wIndex],
+ PORT_RESUME, 0, 2000 /* 2msec */);
if (retval != 0) {
ehci_err (ehci, "port %d resume error %d\n",
wIndex + 1, retval);
@@ -480,13 +485,13 @@ static int ehci_hub_control (
ehci->reset_done [wIndex] = 0;
/* force reset to complete */
- writel (temp & ~(PORT_RWC_BITS | PORT_RESET),
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET),
+ &ehci->regs->port_status [wIndex]);
/* REVISIT: some hardware needs 550+ usec to clear
* this bit; seems too long to spin routinely...
*/
- retval = handshake (
- &ehci->regs->port_status [wIndex],
+ retval = handshake(ehci,
+ &ehci->regs->port_status [wIndex],
PORT_RESET, 0, 750);
if (retval != 0) {
ehci_err (ehci, "port %d reset error %d\n",
@@ -496,7 +501,8 @@ static int ehci_hub_control (
/* see what we found out */
temp = check_reset_complete (ehci, wIndex,
- readl (&ehci->regs->port_status [wIndex]));
+ ehci_readl(ehci,
+ &ehci->regs->port_status [wIndex]));
}
// don't show wPortStatus if it's owned by a companion hc
@@ -541,7 +547,7 @@ static int ehci_hub_control (
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
- temp = readl (&ehci->regs->port_status [wIndex]);
+ temp = ehci_readl(ehci, &ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
@@ -555,13 +561,13 @@ static int ehci_hub_control (
goto error;
if (device_may_wakeup(&hcd->self.root_hub->dev))
temp |= PORT_WAKE_BITS;
- writel (temp | PORT_SUSPEND,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp | PORT_SUSPEND,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
- writel (temp | PORT_POWER,
- &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp | PORT_POWER,
+ &ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_RESET:
if (temp & PORT_RESUME)
@@ -589,7 +595,8 @@ static int ehci_hub_control (
ehci->reset_done [wIndex] = jiffies
+ msecs_to_jiffies (50);
}
- writel (temp, &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp,
+ &ehci->regs->port_status [wIndex]);
break;
/* For downstream facing ports (these): one hub port is put
@@ -604,13 +611,14 @@ static int ehci_hub_control (
ehci_quiesce(ehci);
ehci_halt(ehci);
temp |= selector << 16;
- writel (temp, &ehci->regs->port_status [wIndex]);
+ ehci_writel(ehci, temp,
+ &ehci->regs->port_status [wIndex]);
break;
default:
goto error;
}
- readl (&ehci->regs->command); /* unblock posted writes */
+ ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
break;
default: